https://www.epo.org/en/node/what-do-i

What do I have to do to retrieve all bibliographic entries for the equivalents in a simple family?

Using the Published Data service, submit a request with the constituent "equivalents". The following example shows what you have to do to retrieve all bibliographies for every equivalent of the family of publication EP1000000:

Since the family size is 4, all bibliographies can be obtained in one call using the batch mode: